Look for LISTENING state and note the PID (Process ID).

Custom applications built in Node.js, Python, or Java may be configured by a developer to run on this specific port.

Are you trying to fix a connection error on this port or set up a specific local service?

Below is a guide for setting up and troubleshooting this connection. 1. What is localhost:11501?

Open a second terminal and run:

: Ensure you are using the correct protocol. Try both http://localhost:11501 and https://localhost:11501 [2].